How to check whether an object has certain method property

Question

Using dynamic pattern perhaps  You can call any method property using the dynamic keyword  right  How to check whether the method exist before calling myDynamicObject DoStuff    for example

User · Answer

To avoid AmbiguousMatchException  I would rather say objectToCheck GetType   GetMethods   Count m   gt  m Name    method   gt  0

User · Answer

It is an old question  but I just ran into it  Type GetMethod string name  will throw an AmbiguousMatchException if there is more than one method with that name  so we better handle that case  public static bool HasMethod this object objectToCheck  string methodName        try               var type   objectToCheck GetType            return type GetMethod methodName     null            catch AmbiguousMatchException                   ambiguous means there is more than one result             which means  a method with that name does exist         return true

User · Answer

via Reflection   var property   object GetType   GetProperty  YourProperty    property SetValue object some value null     Similar is for methods

User · Answer

Wouldn t it be better to not use any dynamic types for this  and let your class implement an interface  Then  you can check at runtime wether an object implements that interface  and thus  has the expected method  or property    public interface IMyInterface      void Somemethod        IMyInterface x   anyObject as IMyInterface  if  x    null        x Somemethod        I think this is the only correct way   The thing you re referring to is duck-typing  which is useful in scenarios where you already know that the object has the method  but the compiler cannot check for that  This is useful in COM interop scenarios for instance   check this article   If you want to combine duck-typing with reflection for instance  then I think you re missing the goal of duck-typing

User · Answer

You could write something like that     public static bool HasMethod this object objectToCheck  string methodName        var type   objectToCheck GetType        return type GetMethod methodName     null       Edit   you can even do an extension method and use it like this  myObject HasMethod  SomeMethod

[c#] How to check whether an object has certain method/property?

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